Loom stopping mechanism



Oct. 16, 1934. A. GORDON 1,977,057

LOOM STOPPING MECHANISM Filed May 20. 1933 2 She'ts-Shset 1 Uct. 16, 1934. GORDON 1,977,057

LOOM STOPPING MECHANI SM Filed May 20, 1953 2 Sheets-Sheet 2 Patented Oct. 16, 1934 P'AT'E NT oiF-FrcE 1 1,977,057 LOOM STOPPING. MECHANISM Albert A. Gordon, Worcester, Mass, assignor to Crompton & Knowles Loom Works, Worcester. Mass, a corporation of Massachusetts Application May 20, 1933, Serial No. 672,021

5 Claims. (01. 139-336) This invention relates to automatic weft replenishing looms in which a feeler is provided to indicate the position of the shuttle just prior to weft carrier transfer. I

5 It is the general object of my invention to provide improved means for stopping the'loom in the event of a substantially misplaced shuttle on the transfer side of the loom.

A further object of the invention is to provide 10a shuttle feeler operable to release a transfer member from transfer position and also to .simultaneously release the loom stopping mechanismin the event of a substantially misplaced shuttle on the transfer side of the loom.

I also provide a construction by which the shuttle feeler and theusual center filling fork are-provided with connections to the loom stopping mechanism, which connections are in part common to both control devices.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in. the drawings, in which Fig. 1 is a plan view of parts of a loom embodying my improvements;

Fig. 2 is a partial side elevation of said loom; Fig. 3 is a plan view showing certain operating connections; V

Fig. 4 is an enlarged detail plan view, looking in the direction of the arrow 4 in Figs. 2 and 5, and

Fig. 5 is an end elevation, looking in the direction of the arrow 5 in Figs. 3 and 4.

21 and is provided with a notch 22 (Fig. 5). A

spring plate 23 mounted on the plunger 18 normally forces the upper end of the plunger 18.

forward so that when depressed the notch 22 50 is positioned to receive a shoulder 24 (Fig. 5)

on a lower face of the bracket 21 and thus hold the plunger 18 depressed against the force of the spring 1'7 and with the brake released and inoperative.

55 A rod 30 (Fig.3) is pivoted at one end to a bell crank 31 mounted on a fixed pivot 32 below the breastv beam 33 (Fig. 3) of the loom. 'The rod 30 is provided with a head 34 pivoted to an arm 35 which in turn swings about. a pivot 36 on the fixed bracket 21. A spring 37 is interposed between a collar 38 on' the rod 30 and a bracket 39 on the breast beam 33.

As the rod 30 is pulled to the left in Fig. 3, the swinging movement of the .arm. 35 from the full line to the dotted line position in Fig. 4 will move the head 34 rearward and, as the head 34 is in direct engagement with the. upper end of the plunger 18, the plunger 18 is also moved rearward, releasing the notch 22 from the shoulder 24 andallowing the plunger 18 and lever 15 to be moved upward by the spring 1'7, thus applying the brake.

During suchupward movement, a cam surface 40 on the plunger 18 engages the lower endof the shipper lever 12 and reverses the toggle connection thereof to the connecting rod or link 14, thereby releasing the clutch.

A center filling fork 41 is pivoted at '42 on a bracket secured to the front of the lay 11 substantially at the middle of its length.- An engaging device 43 is operatively connected with the filling fork 41 and engages a curved'actuating arm 44 :as. the lay moves forward, in the absence of weft under the fork 41.

A stud 45 on the sideof the arm 44 engages an arm 46 projecting rearward from asleeve or hub 4'7, supported on a crossshaft 48. A second arm 49 extends upward from the hub 48 and engages one arm of the bell crank 31. If weft is absent under the filling fork 41, the actuating arm 44 is' engaged and pushed forward, depressing the arm 45 to rock the hub 47, thus swinging the arm 45 against the bell crank 41, and swinging the bell crank in an anticlockwise direction to pullthe rod 30 to the left in Fig. 3, thereby releasing the clutch and causing the brake to be applied, all as previously described.

The mechanism thus far described is of a usual commercial type and for a further description thereof, reference is made to the prior pat-' cut to Ryan In Fig. 1 I have shown portions of a weft replenishing mechanism including a transfer member 50 movable to rearward transfer posi-' tion on indication of substantial weftexhaustion, said transfer member being provided with a latch 51 engaging a fixed shoulder 52 when #1,509,614, issued September23 said member is moved rearward preliminary to transfer.

A shuttle feeler 53 (Fig. 1) is slidable forward and rearward in fixed bearings on the loom frame and is yieldingly pressed rearward by a coil spring 54. A stud 55 projects laterally from the shuttle feeler 53 in position for engagement by a forwardly projected end portion 56 of a shuttle binder 5'7.

The latch 51 on the transfer member 50 is provided'with an offset arm 60. When the member 50 is in transfer position, the arm 60 cccupies the rearward position indicated in dotted lines in Fig. 1, at which time the stud 55 occupies the rearward position also indicated in dotted lines in Fig. 1.

As the lay approaches front center and the transfer is completed, the portion 56 of the binder 57 engages the stud 55, moving the same forward to the full line position in Fig. 1, thus engaging the offset arm 60 and releasing the latch 51, whereupon the offset arm 60 returns to forward position, as shown in full lines in Fig. 1, and the transfer member 50 also moves forward.

In order to prevent engagement of the stud 55 by the binder portion 56 at every beat of the lay, the shuttle feeler 53 is provided with a notch 61 normally engaged by a latch 62 on a rod 63 slidable in fixed bearings and yieldingly pressed to the. left in Fig. 1 by a coil spring 64.

The extreme left-hand end of the rod 63 is offset to provide a head 65 positioned for engagement by a cam projection i6 on the transfer member 50 as the transfer member is moved.

rearward. Such engagement releases the shuttle feeler 53 and permits it to be moved to operative position by the spring 5% whenever the transfer member 50 is moved rearward. At all other times the shuttle feeler 53 is latched in forward position.

The transfer and shuttle feeler mechanism thus far described is shown in more complete detail in my prior application No. 548,607 filed July 3, 1931 to which reference is made for further disclosure.

In the present embodiment of my invention, I

have provided the shuttle feeler 53 with a lateral.

projection '70 (Fig. 1) positioned to engage a cam lever '71 pivoted at '72 on the breast beam 73 and connected by a link 74 to the rod 30 and bell crank 31 previously described.

The rear. portion of the shuttle feeler 53 extends across the open end of the shuttle box I5 when the lay 11 is at front, center and is' engaged and forced forward by a shuttle S therein, if the shuttle is substantially misplaced in the shuttle box (as indicated in dotted lines at S). By such engagement, the projection '70 is forced forward to the dotted line position in Fig. 1, swinging the cam lever '71 in an anticlockwise direction and pulling the connecting rod '74 to the left or in the direction of the arrow 11 in Figs. 1 and 3.

Such movement is communicated through the connecting rod 30 to the red head 34 and arm 35, thus swinging the arm 35 and causing the head 34 to be moved rearward as previously described, which movement causes release of the clutch and application of the brake.

Such engagement of the shuttle feeler 53 with transfer member 50, so that the transfer meniber will not be engaged by the misplaced shuttle and no breakage of parts will occur.

I have thus provided for release of the transfer member and for simultaneous stopping of the loom on the occurrence of a substantially misplaced shuttle at the time of transfer, and the stopping of the loom is effected through the usual center filling fork connections to the loom stopping mechanism but without interference with the usual operation of the center filling fork on failure of weft.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is:-

1. Ina loom, loom stopping mechanism, a shuttle feeler, mounted on a fixed part of the loom and projecting across the mouth of the associated shuttle box when the lay is at front center, a center filling fork, and a release device for said loom stopping mechanism independently operable by said center filling fork on absence of weft and bysaid shuttle feeler on engagement of said feeler by a substantially misplaced shuttle, said center filling fork and said shuttle feeler operating in part through common connections to said release device.

2. In a weft replenishing loom, a center filling fork, a shuttle feeler, loom stopping mechanism, connections including a bell crank and connecting rod between said center filling fork and said loom stopping mechanism, and connections from said shuttle feeler to said loom stopping mechanism, said connections including a second rod connected to move said bell crank and first rod independently of movement thereof by said center filling fork.,

3. In a weft replenishing loom, transfer mechanism, loom stopping mechanism, a shuttle feeler, a center filling fork, a release device for said loom stopping mechanism independently operable by said center filling fork on absence of weft and by said shuttle feeler on engagement of said feeler by a substantially misplaced shuttle, and a connection between said shuttle feeler and said transfer mechanism through which transfer is. revoked when said shuttle feeler is operated to stop the loom.

4:. In a weft replenishing loom, a transfer member, means to hold said member in rearward transfer position, loom stopping mechanism, a shuttle feeler, and connections from said feeler to said transfer member and to said loom stopping .mechanism, tions said feeler is effective to release the transfer member and to simultaneously stop the loom on engagement of said feeler by a substantially misplaced shuttle on the transfer pick.

5. In a weft replenishing loom, loom stopping mechanism, a center filling fork, connections from said center filling fork to said loom stopping mechanism, a shuttle feeler, connections from said. shuttle feeler to said first-named connections, a transfer member, means to hold said transfer member in rearward transfer position, and connections from said shuttle feeler to said holding means, said loom stopping mechanism being releasable by said filling fork or by said shuttle feeler, and said holding means being releasable by said shuttle feeler simultaneously with said loom stopping mechanism.

' ALBERT A. GORDON.

through which connec- 

